Hey! Really like the concept! And the gameplay looks really nice!
Just about music (as it is the field I can advice better), I don't know if it's the final one, but 2 things:
- The track is too short for me, so if you are going to spend some time playing, it would be nice to have a longer loopable track, so it doesn't get repetitive.
- Try not to use that low notes with the bass. Take in mind that the game is going to be played in a mobile (apart from PC), so the player is not going to use headphones (or at least in general). Mobiles cannot reproduce that low notes very well, so they are not even going to be heard sometimes. Try to change that low notes for some higher or a different style. (Just an advice from my own experience).
Good luck, and I will keep and eye on this!